Stabilizer system for a motor vehicle suspension system with a rotary actuator

ABSTRACT

A stabilizer system with a rotary actuator has a first stabilizer part which is non-rotationally connected to a rotary actuator vane assembly. A second stabilizer part is non-rotationally connected to a rotary actuator housing. The rotary actuator housing has hydraulic connections for hydraulic lines which form a flow connection to a hydraulic system, whereby the two stabilizer parts can be rotated with respect to one another by way of the rotary actuator. The segments of the hydraulic lines which are connected to the rotary actuator and are subject to possible deformation are located in a plane which lies essentially perpendicular to the axis of rotation of the rotary actuator. A line fastener can be optionally fastened to the rotary actuator housing or to the stabilizer part which is stationary relative to the rotary actuator housing. The line fastener divides the hydraulic lines, by way of a mounting, into a stationary line segment and a movable line segment, whereby the movable line segment is oriented in a plane which is essentially perpendicular to the axis of rotation of the rotary actuator.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The invention relates to a stabilizer system for a motor vehiclesuspension system, the motor vehicle suspension system having a rotaryactuator.

2. Background Information

The technical journal "Auto und Verkehr" (18/1992) discloses an activestabilizer system for the reduction of the rolling motion of motorvehicles. A two-piece stabilizer system with a rotary actuator is usedfor this purpose, whereby a stabilizer part is non-rotationallyconnected to a rotary actuator housing. The rotary actuator has a numberof hydraulic connections connected by means of hydraulic lines to ahydraulic valve in a hydraulic system. The hydraulic valve ispermanently installed in the vehicle. The two components of the rotaryactuator, together with respective stabilizer parts, rotate relative toone another, and also rotate relative to the hydraulic valve. Therelative motion can generally be considered to be caused by thespring-mounted wheels with which the stabilizer is engaged.

With known rotary actuator designs, a bending-torsional load is usuallyapplied to the hydraulic lines which are subject to deformation as aresult of the movements of the stabilizer, since the hydraulic valvedoes not generally move in conjunction with the rotary actuator. Thebending-torsional load can lead to rapid material fatigue which, in theworst case, can result in a loss of hydraulic fluid.

This problem is solved, among other things, in EPA 0 248 986 A1 byhydraulic connections which are oriented at right angles radiallyoutward. The hydraulic lines are essentially not subjected to anytorsional stress. One disadvantage of this construction is that, as arule, not enough space is generally available for radial hydraulicconnections, because units such as the radiator or the engine block canget in the way of the hydraulic connections and the hydraulic lines. Asa result of the large number of different motors which are generallyused, there are often different space conditions.

On an apparatus for the transport of pressure medium disclosed in GermanUtility Model No. 70 38 443, the transport takes place by means of axialshaft channels which are connected to radial connections. But thetransfer of such a concept to a stabilizer system could result in anexcessive increase in the cost and complexity of design and manufacture.

OBJECT OF THE INVENTION

An object of the present invention is to eliminate the disadvantagesdescribed above using essentially simple means.

Another object of the present invention is to use the simplest possiblemeans in a stabilizer system with a rotary actuator to guarantee atorsion-free connection of the hydraulic line or lines, whereby greatflexibility with regard to spatial conditions can be a requirement.

SUMMARY OF THE INVENTION

In accordance with at least one preferred embodiment of the presentinvention, as a result of advantageous placement, the hydraulic linescan generally be subjected to only a bending load. These bending loadscan easily be withstood by hydraulic lines of the known arrangements.

The location of the hydraulic connections on the outside surface of therotary actuator housing makes it possible to locate the hydraulicconnections in a plane essentially perpendicular to an axis through therotary actuator. Care should generally be taken that the hydraulic linesare preferably the shortest possible distance from the hydraulic valveto limit the deformation of the hydraulic lines to a minimum.

In an alternative solution, the hydraulic connections can be designed asangular connections and can be located on the end surface of the rotaryactuator housing. The angular connections in turn generally provide thedesired position of the hydraulic lines. In this case, too, essentiallyonly bending loads occur. It can be particularly advantageous if theangular connections are designed so that they can rotate inside therotary actuator housing. Consequently, the load on the hydraulic linescan be reduced to a minimum.

In a further embodiment of the present invention, the angularconnections can preferably be formed by a sleeve element of thehydraulic line, which sleeve element can preferably have bearingsurfaces which interact with guide surfaces on the housing, and by atleast one seal unit, whereby an axial fixing of the hydraulic line cangenerally provide support against tensile loads.

In another possible embodiment of the present invention, a hose fastenercan be fastened, as desired, to either the rotary actuator housing or toa stabilizer part which is stationary relative to the rotary actuator.This fastener, by means of a mounting device, can divide the hydrauliclines into a stationary and a mobile line segment, whereby the mobileline segment can preferably be in a plane which is essentiallyperpendicular to the axis of rotation of the rotary actuator. Thisembodiment generally requires no rotating hydraulic connections and canadvantageously be retrofitted to existing designs. According to oneadvantageous feature, the hose fastener can be formed by a double pipeclip whose individual clips are essentially oriented at right angles toone another.

The hydraulic connections can advantageously be fastened axially on therotary actuator. On the stationary line segment, it is possible to usesimple "Meterware", which can be individually adjusted to theappropriate length.

In a further embodiment of the present invention, the line fastener canpreferably be designed as one piece. To further facilitate assembly andinstallation, the line fastener for the stationary line segmentspreferably has a radial slot, by means of which the line fastener can beinstalled on the stabilizer. The line fastener preferably has a bandclamping element for fastening.

Preferably, the hydraulic connections advantageously lie essentially ina plane which runs approximately perpendicular to the plane in which theline fastener for the movable line segment is located. For protectionagainst heat and/or impacts from stones, the movable line segments canroll at least partly in a guide rail. Such an arrangement can alsoresult in a controlled rolling motion of the line segments.

It should be understood that when the word "invention" is used in thisapplication, the word "invention" includes "inventions," that is, theplural of "invention." By stating "invention," applicant does not in anyway admit that the present application does not include more than onepatentably and non-obviously distinct invention, and maintains thepossibility that this application may include more than one patentablyand non-obviously distinct invention. The applicant hereby asserts thatthe disclosure of this application may include more than one invention,and, in the event that there is more than one invention, that theseinventions may be patentable and non-obvious, one with respect to theother.

One aspect of the invention resides broadly in an automobile suspensionsystem comprising: a hydraulic rotary actuator; the rotary actuatorcomprising a first member and a second member; at least one of the firstmember and the second member being rotatable with respect to the other;apparatus for rotating, with hydraulic fluid pressure, at least one ofthe first member and the second member with respect to the other; atleast one of the first member and the second member being rotatableabout an axis of rotation; a first stabilizer bar; a second stabilizerbar; the first stabilizer bar being attached to the first member; thesecond stabilizer bar being attached to the second member; apparatus forconnecting hydraulic lines to one of the first member and the secondmember; and the apparatus for connecting comprising apparatus forminimizing twisting, during actuation of the rotary actuator, ofhydraulic lines along the length of hydraulic lines being connected toone of the first member and the second member.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention and its advantages are described in greater detailbelow with reference to the accompanying drawings, in which:

FIG. 1 schematically illustrates a complete stabilizer system;

FIGS. 2a and 2b schematically illustrate a rotary actuator withhydraulic connections on the outside;

FIG. 2c represents a further embodiment of a rotary actuator;

FIGS. 3a and 3b schematically illustrate a rotary actuator with angularconnections;

FIGS. 4a, 4b, 4c, and 4d schematically illustrate examples of an angularhydraulic connection;

FIGS. 5, 5a, 5b, 5c, 5d, and 5e schematically illustrate a hose fasteneron the stabilizer part; and

FIGS. 6 and 6a schematically illustrate a non-rotational angularhydraulic connections.

DESCRIPTION OF THE PREFERRED EMBODIMENT

FIG. 1 represents a stabilizer 1a, 1b with a rotary actuator 3. On theangled ends 1a', 1b' there preferably are locators 5a, 5b in which wheelbearings of a motor vehicle (not shown in the figure, for purposes ofsimplicity) can be engaged by means which are generally known andtherefore not discussed in any further detail herein. The stabilizer 1a,1b is preferably fastened to the vehicle by means of articulated clips7a, 7b.

The rotary actuator 3 can preferably have a rotary actuator housing 3aand a rotary actuator vane assembly 3b (shown in FIG. 2b). The rotaryactuator housing 3a can preferably be non-rotationally connected to thestabilizer part 1a, and the rotary actuator vane assembly 3b canpreferably be non-rotationally connected to the stabilizer part 1b. Inthe event of uneven deflection of the vehicle springs, the rotaryactuator 3 can be rotated by means of the angled ends 1a', 1b', wherebywheel contact forces can interact with the angled ends 1a', 1b' to exerta torsional moment on the stabilizer 1a, 1b.

The rotary actuator 3 preferably has two hydraulic connections 9a, 9bwhich form a connection to a hydraulic system 13 via the hydraulic lines11a, 11b. The hydraulic system 13 preferably includes at least ahydraulic valve 13a. The hydraulic system 13 and hydraulic valve 13a aregenerally considered to be well known and are, therefore, not discussedin a further detail herein. The components of the hydraulic system 13can be permanently installed in the vehicle so that with each deflectionof the vehicle springs or stabilizer 1a, 1b movement, there can be arelative movement of the hydraulic lines 11a, 11b with respect to thehydraulic system 13. This movement preferably should be compensated forby the hydraulic hoses forming the hydraulic lines 11a, 11b togetherwith the hydraulic connections 9a, 9b.

FIG. 1 shows bellow sleeves 50 protecting the connection between thestabilizer part 1a and the rotary actuator 3 and the connection betweenthe stabilizer part 1b and the rotary actuator 3.

FIGS. 2a, 2b and 2c are restricted to the rotary actuator 3. The rotaryactuator vane assembly 3b, together with the rotary actuator housing 3a,preferably forms at least one pressure chamber 15 therebetween. Thepressure chamber 15 can be alternately filled with hydraulic medium viaa separate system of passages 17a, 17b or emptied by means of a rotarymovement of the rotary actuator housing 3a relative to the rotaryactuator vane assembly 3b. Each of these passage systems 17a, 17b ispreferably connected to a hydraulic connection 9a, 9b which, in thisembodiment of the rotary actuator 3, are preferably located on theoutside of the rotary actuator housing 3a and are disposed radially withrespect to the housing 3a. The connection of the hydraulic connections9a, 9b is preferably achieved by means of a ring-type nipple 19, whichcan turn with respect to the rotary actuator housing 3a, whereby thehydraulic connections 9a, 9b are preferably offset relative to thelongitudinal axis of the rotary actuator 3. With such an offset, thehydraulic connections 9a, 9b would preferably never come in contact withone another during rotational movement of the ring-type nipple 19.

In accordance with at least one preferred embodiment of the presentinvention, there can conceivably be two different pressure chambers 15,only one of which can be considered as being shown in FIG. 2b.Particularly, each of the passage systems 17a and 17b can be consideredas feeding into a different corresponding pressure chamber 15.Alternatively, by way of suitable means not illustrated, such upper andlower chambers 15 could conceivably be connected with one another toessentially form a greater composite chamber. As a further alternative,passage 17b could conceivably feed into the pressure chamber 15illustrated in FIG. 2b by way of a suitable connecting passage notillustrated. Other variations on these alternatives just described areconceivable within the scope of the previous invention.

The offset in the embodiment discussed above can be considered to beradial with respect to the longitudinal axis. In an additionalembodiment, the offset may be axial with respect to the longitudinalaxis. The offset may result in a variety of combinations ofcircumferential positions of the hydraulic connection 9a, 9b withrespect to the longitudinal axis.

With the rotational movement of the two rotary actuator components 3a,3b during operation, the ring-type nipple 19 with its hydraulicconnections 9a, 9b via the hydraulic lines 11a, 11b preferably remainsin an unchanged position relative to the hydraulic valve 13a, since thering-type nipple 19 preferably rotates with respect to the rotaryactuator housing 3a to the same extent at which the rotary actuatorhousing 3a rotates relative to the vehicle chassis. Thus, generallyminimal torsional forces, and typically no torsional forces at all, canbe exerted on the hydraulic lines 11a, 11b. Even rigid tubes couldconceivably be used for the hydraulic lines 11a, 11b.

FIG. 2c illustrates a further embodiment of the present invention. Seals40 can be located between the rotary actuator housing 3a and thering-type nipple connector 19 to prevent the leakage of hydraulic fluidduring operation of the rotary actuator 3. The seals 40, as well asbushings 41, can essentially prevent the ring-type nipple connector 19from becoming disconnected from the rotary actuator housing 3a duringoperation of the rotary actuator 3.

FIGS. 3a and 3b show alternative embodiments with the possibility ofseparate rotational connections 9, 9a, 9b that can be elbow connections,preferably 90-degree elbow connectors, on the end surface of the rotaryactuator housing 3a near the connection to the stabilizer 1. The axes ofrotation of the rotary connections 9, 9a, 9b are preferably parallel tothe axis of rotation of the rotary actuator 3 so that the hydrauliclines 11, 11a, 11b can be in a plane which is essentially perpendicularto the axis of rotation of the rotary actuator 3. Therefore, generallyminimal torsional stresses, and typically no torsional stresses, canoccur in the hydraulic lines 11, 11a, 11b since, on the one hand, nohydraulic line 11, 11a, 11b is parallel to the principal axis of therotary actuator 3 and on the other hand, no torsional moment canaccumulate.

In accordance with at least one preferred embodiment of the presentinvention, the rotational connection 9 shown in FIG. 3b, as well as thehydraulic line 11 shown in FIG. 3b, could be taken to represent,collectively, the rotary connections 9a, 9b and the hydraulic lines 11a,11b, respectively, shown in FIG. 3a. Alternatively, the designation "9,"as employed herein and in the drawings, could conceivably be taken torepresent any rotary connection described herein, while the designation"11," as employed herein and in the drawings, could conceivably be takento represent any hydraulic line described herein.

FIGS. 4a through 4d illustrate various embodiments of rotationalconnections 9 for the hydraulic line 11. A graduated hole 42 ispreferably worked into the rotary actuator housing 3a. This hole 42preferably includes one axial guide surface 46 and one radial guidesurface 43 for the hydraulic line 11. The connection 9 can preferably beformed by two parts 21 and 21a. Part 21 can preferably be embodied by anexternal portion of a locking screw. Part 21a can preferably be insertedinto hole 42 towards surface 46. A seal unit 44 can preferably beenclosed inside the radial guide surface 43. The graduated hole 42 ofthe rotary actuator housing 3a can also preferably have a threadedportion 45 into which an axial locking screw 21 can be threaded. Thelocking screw 21 preferably presses against shoulder 21b of terminalportion 21a to hold the hydraulic line 11 in hole 42. This locking screw21 preferably rests with the head of the screw on the end surface 47 ofthe rotary actuator housing 3a. The longitudinal section of thehydraulic line 11 between the axial guide surface 46 of the graduatedhole 42 and an axial end surface 47 of the locking screw 21 shouldpreferably be shorter, thus guaranteeing that the hydraulic line 11remains free to rotate.

In other words, the hydraulic line 11 should remain free of any axialcompression, allowing it to rotate freely within the locking screw 21.Axial locking screw 21 prevents removal of the hydraulic connectors 9during operation of the rotary actuator 3.

In accordance with at least one preferred embodiment of the presentinvention, part 21a could conceivably be embodied by a suitablebolt-like member being particularly configured to perform any desiredfunctions or possess any desired properties. For example, with respectto FIG. 4a, part 21a could conceivably be embodied by a bolt-typeelement having a portion, towards surface 46, having a diameterapproximately equivalent to that of radial guide surface 43, whilehaving a narrowed portion adjacent thereto to allow seal unit 44 to beaccommodated between part 21 a and radial guide surface 43.Additionally, adjacent the aforementioned narrowed portion, a shoulderportion 21b could conceivably be provided, so as to substantiallyencase, or provide an encasement for, the seal unit 44. As such,shoulder or shoulder portion 21b could conceivably have a diameterapproximately equivalent to that of radial guide surface 43. Inaccordance with at least one preferred embodiment of the presentinvention, part 21a could be termed a "terminal portion."

In the variant illustrated in FIG. 4b, an angle ring orinternally-bevelled ring 23 is preferably connected by means of apositive interlock 27 to the end of the hydraulic line 11 inserted intothe rotary actuator housing 3a. The angle ring 23, by means of its twoend faces together with the locking screw 21 and a shoulder 25 of thegraduated hole 42, preferably axially fixes the hydraulic line 11,whereby the shoulder 25 has a greater axial extension than the anglering 23, so that the angle ring 23 generally cannot be permanentlydistorted by the locking screw 21.

In accordance with at least one preferred embodiment of the presentinvention, the aforementioned positive interlock 27 could preferably beembodied by a form-locking arrangement, such as a snap-and-lugarrangement.

In the embodiment discussed directly above, the end 21a of the hydraulicline 11 is preferably substantially straight with seals 44 disposedinside a groove of the surface 43. End 21a can preferably have a grooveto hold ring 23. Ring 23 presses preferably axially against surface 24aof groove 24 to hold the hydraulic line 11 in place.

FIG. 4c is essentially identical to the embodiment shown in FIG. 4b.However, instead of an angle ring 23 which is rolled or caulked to thehydraulic line 11, a locking ring 29 together with a retaining ring 31can preferably be used. The ring 29 can then be engaged in the groove24, and ring 31 can axially press on ring 29 to hold line 11 in place.The information regarding the axial dimensions of the angle ring 23 asdiscussed immediately above can also be applied to the retaining ring31.

The angular connection 9 illustrated in FIG. 4d is essentially based onthe version illustrated in FIG. 4c. However, instead of the lockingscrew 21, a second snap ring 33 can preferably be used in conjunctionwith a second retaining ring 35. The snap ring 33 essentially determinesthe axial position of a second retaining ring 35.

In a further modification of the object of the present invention shownin FIGS. 5 and 5a, a line fastener 37 can preferably be used for thehydraulic line 11a, 11b. This line fastener 37 can preferably be formedby a double pipe clip, the first clip 39a of which can be fastened bymeans of tightening bolts or turnbuckle screws to the stabilizer part 1awhich is preferably stationary with respect to the rotary actuatorhousing 3a. The second clip 39b can preferably be parallel to the axisof rotation of the rotary actuator, so that the clip 39b for thehydraulic line 11a, 11b represents a mounting device which orients thehydraulic line 11a, 11b in a plane which is essentially perpendicular tothe axis of rotation. The second clip 39b preferably divides thehydraulic line 11a, 11b into sections 11a', 11a, 11b', 11b, the lengths11a', 11b' of which are generally not subjected to mechanical loads ofany kind, since they are stationary with respect to the stabilizer part1a and the rotary actuator housing 3a. The longitudinal sections 11a,11b are generally only subjected to slight bending loads. With thedouble pipe clip, it is possible to configure this type of rotaryactuator housing 3a in such a manner that the hydraulic lines 11 lie ina plane with the hydraulic valve 13a.

FIGS. 5b and 5c show details of the stabilizer system, in which a linefastener 39a, 39b can be used which is designed in one piece. By meansof a band clamping element 41, the line fastener 39a can preferably befastened to the stabilizer 1a. To keep the bending motion of the movingline segments 11a, 11b as small as possible, the hydraulic lineconnections 9a, 9b preferably lie in a plane 43, which plane is orientedessentially perpendicular to the planes 45 of the moving line segments11a, 11b. A guide rail 47, which can preferably be mounted in stationaryfashion, thereby can hold the moving line segments 11a, 11b, at least insegments.

FIGS. 5d and 5e are restricted to an illustration of the line fastener39. The double hose clamp fitting can preferably have a radial slot 49,by means of which the double hose clamp can preferably be installed onthe stabilizer 1a. The band clamping element 41 used for the fastenercan preferably be guided by an encircling groove 51. For the positioningof the line segments 11a, 11b, 11a', 11b', there can preferably beradially-open clamping and guide locators 53, 55. The lines 11a,b canthereby be replaced without having to detach the entire mounting 37. Itis also possible to manufacture the mounting from plastic For thestationary line segments 11a', 11b', inflexible plastic or a metalmaterial can also be used, whereby a metal material makes possiblesmaller radii of curvature.

With reference to FIGS. 3a, 3b, 4a, 4b, 4c, 4d, 5 and 5a, FIGS. 6 and 6aillustrate, as the simplest solution, an angular connection 9a, 9b whichis preferably rigidly connected to the rotary actuator housing 3a. Withthis embodiment care should preferably be taken that the hydraulic valve13a (shown in FIG. 1) lies in a plane with the hydraulic connections 9a,9b. In this variant, too, no torsional load can generally be applied toany twisted length of the hydraulic line 11.

One feature of the invention resides broadly in the hydraulic rotaryactuator within a stabilizer system divided into two parts, consistingof a first stabilizer part which is non-rotationally connected to arotary actuator vane assembly, and a second stabilizer part which isnon-rotationally connected to a rotary actuator housing, whereby therotary actuator housing has hydraulic connections for hydraulic lineswhich form a flow connection to a hydraulic system, whereby the twostabilizer parts can be rotated with respect to one another by means ofthe rotary actuator, characterized by the fact that the segments of thehydraulic lines 11a, 11b which are connected to the rotary actuator 3and are subject to possible deformation are located in a plane whichlies essentially perpendicular to the axis of rotation of the rotaryactuator 3.

Another feature of the invention resides broadly in the hydraulic rotaryactuator characterized by the fact that the hydraulic connections 9a, 9bare oriented essentially perpendicular to the outside surface of therotary actuator housing 3a.

Yet another feature of the invention resides broadly in the hydraulicrotary actuator characterized by the fact that a ring-type nipple 19which can be rotated around the axis of rotation of the rotary actuator3 and which comprises the hydraulic connections 9a, 9b is located on theoutside surface.

Still another feature of the invention resides broadly in the hydraulicrotary actuator characterized by the fact that angular connections 9 arelocated on the end of the rotary motor housing 3a.

A further feature of the invention resides broadly in the hydraulicrotary actuator characterized by the fact that the angular connections 9are designed so that they can rotate inside the rotary actuator housing3a.

Another feature of the invention resides broadly in the hydraulic rotaryactuator characterized by the fact that the angular connection 9 isformed by a sleeve element of the hydraulic line 11, which sleeveelement has bearing surfaces which interact with guide surfaces on thehousing and at least one seal unit, whereby an axial fastener 21, 33supports the hydraulic line 11 against tensile loads.

Yet another feature of the invention resides broadly in the hydraulicrotary actuator characterized by the fact that a line fastener 39a, 39bcan be fastened as desired to the rotary actuator housing 3a or to astabilizer part 1a which is stationary relative to the rotary actuatorhousing 3a, which line fastener 39a, 39b, by means of a mounting device,divides the hydraulic lines 11 into a stationary 11a', 11b' and a mobileline segment 11a, 11b, whereby the mobile line segment lies in a planewhich is essentially perpendicular to the axis of rotation of the rotaryactuator 3.

Still another feature of the invention resides broadly in the hydraulicrotary actuator characterized by the fact that the line fastener 39a,39b consists of a double pipe clip whose individual clips are orientedat right angles to one another.

One feature of the invention resides broadly in the stabilizer systemwith a rotary actuator, consisting of a first stabilizer part which isnon-rotationally connected to a rotary actuator vane assembly, and asecond stabilizer part which is non-rotationally connected to a rotaryactuator housing, whereby the rotary actuator housing has hydraulicconnections for hydraulic lines which form a flow connection to ahydraulic system, whereby the two stabilizer parts can be rotated withrespect to one another by means of the rotary actuator and the hydrauliclines connected to the rotary actuator, with their longitudinal segmentswhich are subjected to a potential deformation, are oriented in a planewhich runs essentially perpendicular to the axis of rotation of therotary actuator, characterized by the fact that a line fastener 39a, 39bis optionally fastened to the rotary actuator housing 3a or to thestabilizer part 1a which is stationary relative to the rotary actuatorhousing 3a, which line fastener 39a, 39b divides the hydraulic lines 11by means of a mounting into a stationary line segment 11a, 11b and amovable line segment 11a, 11b, whereby the movable line segment isoriented in a plane which is essentially perpendicular to the axis ofrotation of the rotary actuator 3.

Another feature of the invention resides broadly in the stabilizersystem characterized by the fact that the line fastener 39a, 39bconsists of a double hose clamp fitting, the individual hose clamps ofwhich are oriented at right angles to one another.

Yet another feature of the invention resides broadly in the stabilizersystem characterized by the fact that the line fastener 39a/39b isdesigned as one piece.

Still another feature of the invention resides broadly in the stabilizersystem characterized by the fact that the line fastener 39a for thestationary line segments 11a', 11b' has a radial slot 49, by means ofwhich the line fastener can be mounted on the stabilizer 1a.

A further feature of the invention resides broadly in the stabilizersystem characterized by the fact that the line fastener 39a has a bandclamping element 41 for fastening.

Another feature of the invention resides broadly in the stabilizersystem characterized by the fact that the hydraulic connections 9a, 9blie essentially in a plane 43 which runs approximately perpendicular tothe plane 45 in which the line fastener 39b is located.

Yet another feature of the invention resides broadly in the stabilizersystem characterized by the fact that the movable line segments 11a, 11broll at least partly in a guide rail 47.

A further feature of the invention resides broadly in a hydraulic rotaryactuator within a stabilizer system divided into two parts, having afirst stabilizer part which is non-rotationally connected to a rotaryactuator vane assembly, and a second stabilizer part which isnon-rotationally connected to a rotary actuator housing, whereby therotary actuator housing has hydraulic connections for hydraulic lineswhich form a flow connection to a hydraulic system, whereby the twostabilizer parts can be rotated with respect to one another by means ofthe rotary actuator, characterized by the fact that the segments of thehydraulic lines which are connected to the rotary actuator and aresubject to possible deformation are located in a plane which liesessentially perpendicular to the axis of rotation of the rotaryactuator.

Some types of automobile suspension systems that could be utilized inaccordance with the present invention may be or are disclosed by thefollowing U.S. Pat. Nos. 5,178,406 to Reynolds, entitled "Torsion BarSuspension"; 5,286,059 to Tabe, entitled "Height Control System whenVehicle Is Jacked Up"; 5,288,101 to Minnett, entitled "Variable RateTorsion Control System for Vehicle Suspension"; and 5,290,048 toTakahashi and Yamashita, entitled "Working Fluid Circuit for ActiveSuspension Control System of Vehicle".

Some types of rotary actuators that could be utilized in accordance withthe present invention may be or are disclosed by the following U.S. Pat.Nos. 5,332,236 to Kastuhara et al., entitled "Sealing Mechanism for aRotary Actuator"; 5,309,816 to Weyer, entitled "Rotary Actuator withExternal Bearings"; and 5,267,504 to Weyer, entitled "Rotary Actuatorwith Annular Fluid Coupling Rotatably Mounted to Shaft".

Some types of rotatable hydraulic motors that could be utilized inaccordance with the present invention instead of a rotary actuator 3 maybe or are disclosed by the following U.S. Pat. Nos. 5,181,579 toGilliem, entitled "Steering and Driving System"; 5,184,466 toSchniederjan and Wagenseil, entitled "Control and Regulating Device fora Hydrostatic Transmission"; 5,265,995 to Beck, entitled "Tractor-loaderBackhoe"; 5,207,550 to Lehman, entitled "Drum Handler"; 5,314,387 toHauser and Johnson, entitled "Hydrostatic Transmission"; and 5,197,283to Kagiwada and Yasuoka, entitled "Hydraulic-motor Drive Circuit Systemwith Anti-cavitation Control".

Some types of hydraulic piston motors that could be utilized inaccordance with the present invention instead of a rotary actuator orrotatable hydraulic motor may be or are disclosed by the following U.S.Pat. Nos. 5,182,977 to Gulbrantson, entitled "Hydraulic CentrifugalPiston Motor"; 5,203,172 to Simpson and Bisel, entitled"Electromagnetically Powered Hydraulic Engine"; 5,222,427 to Molitorisz,entitled "Axial Piston Hydraulic Motor"; and 5,249,512 to Christenson,entitled "Hydrostatic Pump and Motor".

Some types of hydraulic valves that could be utilized in accordance withthe present invention may be or are disclosed by the following U.S. Pat.Nos. 5,331,883 to Andersson, entitled "Hydraulic Valve Means"; 5,325,891to Mateja, entitled "Hydraulic Valve"; 5,255,704 to Bennett, entitled"Leakproof Hydraulic Valve"; 5,238,020 to Frey and Plangger, entitled"Hydraulic Valve"; 5,207,780 to Norimatsu et al., entitled "HydraulicValve Device for Automotive Power Steering Gear"; and 5,222,521 toKihlberg, entitled "Hydraulic Valve".

Some types of ring-type nipple connectors that could be utilized inaccordance with the present invention may be or are disclosed in thefollowing U.S. Pat. Nos. 5,193,857 to Kitamura, entitled "Connector";5,195,788 to Oetiker, entitled "Insert Member for Use with Hose ClampArrangements"; and 5,226,677 to Peter and Timm, entitled "Rotary Jointwith Extended Life Seal".

All, or substantially all, of the components and methods of the variousembodiments may be used with at least one embodiment or all of theembodiments, if any, described herein.

All of the patents, patent applications and publications recited herein,and in the Declaration attached hereto, are hereby incorporated byreference as if set forth in their entirety herein.

The corresponding foreign patent publication applications, namely,Federal Republic of Germany Patent Application No. P 43 37 821.8, filedon Nov. 5, 1993, having inventors Robert PRADEL and Stefan SCHIFFLER,and DE-OS P 43 37 821.8 and DE-PS P 43 37 821.8, as well as theirpublished equivalents, and other equivalents or correspondingapplications, if any, in corresponding cases in the Federal Republic ofGermany and elsewhere, and the references cited in any of the documentscited herein, are hereby incorporated by reference as if set forth intheir entirety herein.

The corresponding foreign patent publication applications, namely,Federal Republic of Germany Patent Application Nos. P 43 37 821.8, filedon Nov. 5, 1993 and P 44 35 491.6, filed on Oct. 4, 1994, havinginventors Robert Pradel and Stefan Schiffler, and DE-OS P 43 37 821.8and P 44 35 491.6 and DE-PS P 43 37 821.8 and P 44 35 491.6, as well astheir published equivalents, and other equivalents or correspondingapplications, if any, in corresponding cases in the Federal Republic ofGermany and elsewhere, and the references cited in any of the documentscited herein, are hereby incorporated by reference as if set forth intheir entirety herein.

The details in the patents, patent applications and publications may beconsidered to be incorporable, at applicant's option, into the claimsduring prosecution as further limitations in the claims to patentablydistinguish any amended claims from any applied prior art.

The appended drawings in their entirety, including all dimensions,proportions and/or shapes in at least one embodiment of the invention,are accurate and to scale and are hereby included by reference into thisspecification.

The invention as described hereinabove in the context of the preferredembodiments is not to be taken as limited to all of the provided detailsthereof, since modifications and variations thereof may be made withoutdeparting from the spirit and scope of the invention.

What is claimed is:
 1. A vehicular stabilizer system for stabilizing avehicle during turning, said vehicular stabilizer system comprising:afirst stabilizer bar; a second stabilizer bar; an actuators; saidactuator comprising a first member and a second member; said firststabilizer bar being attached to said first member; said secondstabilizer bar being attached to said second member; means forconnecting hydraulic lines to one of said first member and said secondmember; said means for connecting comprising means for minimizingtwisting, during actuation of said actuator, of hydraulic lines alongthe length of hydraulic lines being connected to one of said firstmember and said second member; at least one of said first member andsaid second member being rotatable with respect to the other; means forrotating, with hydraulic fluid pressure, at least one of said firstmember and said second member with respect to the other; at least onesaid first member and said second member being rotatable about an axisof rotation; said means for minimizing twisting of hydraulic linesconnected to one of said first member and said second member comprisinghydraulic connectors for connecting hydraulic lines to one of said firstmember and said second member; said means for minimizing twisting ofhydraulic lines connected to one of said first member and said secondmember further comprising a rotatable fitting for directing hydraulicfluid to and from said means for rotating; said rotatable fittingcomprising means for rotating about said axis of rotation; saidrotatable fitting being disposed about and rotatable relative to atleast one of said first member and said second member; said hydraulicconnectors forming part of said rotatable fitting; said rotatablefitting maintaining said hydraulic connectors substantially stationarywith respect to themselves during actuation of said rotary actuator;said rotary actuator having a central portion disposed about said axisof rotation; said hydraulic connectors extending substantially outwardlyaway from said central portion; said hydraulic connectors comprising afirst hydraulic connector and a second hydraulic connector; said firsthydraulic connector having a longitudinal axis; a length of a connectedhydraulic line being substantially alignable with said longitudinal axisof said first hydraulic connector; said longitudinal axis of said firsthydraulic connector being substantially disposed in a first planesubstantially transverse to said axis of rotation; said second hydraulicconnector having a longitudinal axis; a length of a connected hydraulicline being substantially alignable with said longitudinal axis of saidsecond hydraulic connector; said longitudinal axis of said secondhydraulic connector being substantially disposed in a second planesubstantially transverse to said axis of rotation; said first planebeing substantially coincident with said second plane; said first memberof said rotary actuator comprising shaft means; said second member ofsaid rotary actuator comprising cylinder means; said cylinder means andsaid shaft means being disposed to rotate about said axis of rotation;said shaft means being at least substantially disposed within saidcylinder means; said cylinder means being disposed to rotatesubstantially concentrically about said shaft means; said rotatablefitting being disposed about said cylinder means; said rotatable fittingcomprising means for rotating said rotatable fitting substantiallyfreely with respect to said cylinder means; means for connecting saidfirst stabilizer bar and said second stabilizer bar to wheel assembliesof a motor vehicle; means for fastening said automobile suspensionsystem to a motor-vehicle; a hydraulic system providing hydraulic fluidto operate said rotary actuator; said hydraulic system comprising ahydraulic pump for pumping hydraulic fluid; said hydraulic systemfurther comprising a hydraulic valve for regulating the flow ofhydraulic fluid; means for connecting said first stabilizer bar to saidfirst member; means for connecting said second stabilizer bar to saidsecond member; bellow sleeves protecting said means for connecting saidfirst stabilizer bar and said first member and said means for connectingsaid second stabilizer bar and said second member; said rotary actuatorcomprising seals to prevent leakage of hydraulic fluid during operationof said rotary actuator; said hydraulic connectors comprising means forsealing hydraulic fluid and means for preventing removal of saidhydraulic connectors during operation of said rotary actuator; saidhydraulic connectors comprising a guide surface for receiving hydrauliclines; said guide surface comprising a threaded surface for accepting athreaded screw; and said hydraulic connectors further comprising alocking screw for threading into said threaded surface to preventremoval of said hydraulic connectors during operation of said rotaryactuator.
 2. A vehicular stabilizer system for stabilizing a vehicleduring turning, said vehicular stabilizer system comprising:a firststabilizer bar; a second stabilizer bar; an actuator; said actuatorcomprising a first member and a second member; said first stabilizer barbeing attached to said first member; said second stabilizer bar beingattached to said second member; means for connecting hydraulic lines toone of said first member and said second member; said means forconnecting comprising means for minimizing twisting, during actuation ofsaid actuator, of hydraulic lines along the length of hydraulic linesbeing connected to one of said first member and said second member; atleast one of said first member and said second member being rotatablewith respect to the other; means for rotating, with hydraulic fluidpressure, at least one of said first member and said second member withrespect to the other; at least one said first member and said secondmember being rotatable about an axis of rotation; said means forminimizing twisting of hydraulic lines connected to one of said firstmember and said second member comprising means for providing movement ofhydraulic lines, connected to one of said first member and said secondmember, substantially solely in a plane transverse to said axis ofrotation during actuation of said rotary actuator; said means forproviding movement of hydraulic lines, connected to one of said firstmember and said second member, comprising at least one hydraulicconnector for connecting hydraulic lines to one of said first member andsaid second member; said at least one hydraulic connector beingswivellable about a first axis; said first axis being disposed throughsaid at least one hydraulic connector and substantially parallel to saidaxis of rotation; said at least one hydraulic connector comprising asecond axis; said second axis being disposed transverse to said firstaxis of the corresponding at least one hydraulic connector; said atleast one hydraulic connector comprising two openings permitting theflow of hydraulic fluid through said at least one hydraulic connector ina direction along said first axis and said second axis; said at leastone hydraulic connector being connected to one of said first member andsaid second member to provide hydraulic fluid to said rotary actuator;said at least one hydraulic connector comprising means for connectinghydraulic lines to said at least one hydraulic connector and maintainingalignment of at least a portion of the hydraulic lines with said secondaxis; said one of said first member and said second member comprisingmeans for receiving said at least one hydraulic connector; said at leastone hydraulic connector comprising means for rotatably maintaining aconnection from an hydraulic line within said at least one hydraulicconnector; means for connecting said first stabilizer bar and saidsecond stabilizer to wheel assemblies of a motor vehicle; means forfastening said automobile suspension system to a motor vehicle; ahydraulic system providing hydraulic fluid to operate said rotaryactuator; said hydraulic system comprising a hydraulic pump for pumpinghydraulic fluid; said hydraulic system further comprising a hydraulicvalve for regulating the flow of hydraulic fluid; means for connectingsaid first stabilizer bar to said first member; means for connectingsaid second stabilizer bar to said second member; bellow sleevesprotecting said means for connecting said first stabilizer bar and saidfirst member and said means for connecting said second stabilizer barand said second member; said rotary actuator comprising seals to preventleakage of hydraulic fluid during operation of said rotary actuator;said at least one hydraulic connector comprising means for sealinghydraulic fluid and means for preventing removal of said at least onehydraulic connector during operation of said rotary actuator; said atleast one hydraulic connector comprising a guide surface for receivingat least one hydraulic line; said guide surface comprising a threadedsurface for accepting a threaded screw; and said at least one hydraulicconnector further comprising a locking screw for threading into saidthreaded surface to prevent removal of said at least one hydraulicconnector during operation of said rotary actuator.
 3. A vehicularstabilizer system for stabilizing a vehicle during turning, saidvehicular stabilizer system comprising:a first stabilizer bar; a secondstabilizer bar; an actuator; said actuator comprising a first member anda second member; said first stabilizer bar being attached to said firstmember; said second stabilizer bar being attached to said second member;means for connecting hydraulic lines to one of said first member andsaid second member; said means for connecting comprising means forminimizing twisting, during actuation of said actuator, of hydrauliclines along the length of hydraulic lines being connected to one of saidfirst member and said second member; at least one of said first memberand said second member being rotatable with respect to the other; meansfor rotating, with hydraulic fluid pressure, at least one of said firstmember and said second member with respect to the other; at least onesaid first member and said second member being rotatable about an axisof rotation; said means for minimizing twisting of hydraulic linesconnected to one of said first member and said second member comprisingmeans for providing movement of hydraulic lines, connected to one ofsaid first member and said second member, substantially solely in aplane transverse to said axis of rotation during actuation of saidrotary actuator; said means for minimizing twisting further comprising:clamp means; said clamp means being connected to a portion of saidautomobile suspension system that remains substantially stationaryrelative to one of said first member and said second member; a firsthydraulic line for permitting the flow of hydraulic fluid; said firsthydraulic line comprising a first portion and a second portion; a secondhydraulic line; said second hydraulic line comprising a first portionand a second portion; said clamp means comprising means for attachingsaid first hydraulic line and disposing said first portion of said firsthydraulic line in a plane transverse to said axis of rotation; and saidclamp means comprising means for attaching said second hydraulic lineand disposing said first portion of said second hydraulic line in aplane transverse to said axis of rotation.
 4. The vehicular stabilizersystem according to claim 3 including:a first hydraulic connectorcomprising means for connecting said first hydraulic line to one of saidfirst member and said second member; a second hydraulic connectorcomprising means for connecting said second hydraulic line to one ofsaid first member and said second member; said second portion of saidfirst hydraulic line being disposed between said clamp and said firsthydraulic connector; said second portion of said second hydraulic linebeing disposed between said clamp and said second hydraulic connector;and said second portion of said first hydraulic line and said secondportion of said second hydraulic line remaining substantially stationarywith respect to one of said first member and said second member duringactuation of said rotary actuator.
 5. The vehicular stabilizer systemaccording to claim 4 wherein said clamp means is connected to one ofsaid first member and said second member.
 6. The vehicular stabilizersystem according to claim 5 wherein:said first member of said rotaryactuator comprises shaft means; said second member of said rotaryactuator comprises cylinder means; said cylinder means and said shaftmeans are disposed to rotate about said axis of rotation; said shaftmeans is at least substantially disposed within said cylinder means;said cylinder means is disposed to rotate substantially concentricallyabout said shaft means; and said clamp means is connected to saidcylinder means.
 7. The vehicular stabilizer system according to claim 6wherein:said clamp means comprises a first clamp and a second clamp;said first portion of said first hydraulic line has a length and a firstlongitudinal axis along the length thereof; said first portion of saidsecond hydraulic line has a length and a second longitudinal axis alongthe length thereof; said first clamp has a length and a first transverseaxis along the length thereof; said first clamp is disposed such thatsaid first transverse axis is substantially transverse to said firstlongitudinal axis and said second longitudinal axis; said second clamphas a length and a second transverse axis along the length thereof; saidsecond clamp is disposed such that said second transverse axis issubstantially transverse to said first line; and said second clampcomprises a slot for connecting said clamp means to said cylinder means.8. The vehicular stabilizer system according to claim 7 wherein:saidclamp means comprises a band clamp; said band clamp is disposed forfastening said cylinder means to said clamp; said band clamp comprises athin metal strip; and said thin metal strip is bent around said cylindermeans.
 9. The vehicular stabilizer system according to claim 8wherein:said first hydraulic connector has a length and a thirdlongitudinal axis along the length thereof; said second hydraulicconnector has a length and a fourth longitudinal axis along the lengththereof; said third longitudinal axis is parallel to said fourthlongitudinal axis; said third longitudinal axis is parallel to said axisof rotation; said fourth longitudinal axis is parallel to said axis ofrotation; said first longitudinal axis and said second longitudinal axislie in a first plane; said third longitudinal axis and said fourthlongitudinal axis lie in a second plane; and said first plane issubstantially transverse to said second plane.
 10. The vehicularstabilizer system according to claim 9 wherein said first clamp and saidsecond clamp together form one piece.
 11. The vehicular stabilizersystem according to claim 10 including:guide rail means for guiding atleast a portion of said first portion of said first hydraulic line andat least a portion of said first portion of said second hydraulic line;said guide rail means comprising means for guiding the extending and theretracting of said first and second hydraulic lines during actuation ofsaid rotary actuator; means for connecting said first stabilizer bar andsaid second stabilizer to wheel assemblies of a motor vehicle; means forfastening said automobile suspension system to a motor vehicle; ahydraulic system for providing hydraulic fluid to operate said rotaryactuator; said hydraulic system comprising a hydraulic pump for pumpinghydraulic fluid; said hydraulic system further comprising a hydraulicvalve for regulating the flow of hydraulic fluid; means for connectingsaid first stabilizer bar to said first member; means for connectingsaid second stabilizer bar to said second member; bellow sleeves forprotecting said means for connecting said first stabilizer bar and saidfirst member and said means for connecting said second stabilizer barand said second member; said rotary actuator comprising seals to preventleakage of hydraulic fluid during operation of said rotary actuator;hydraulic connectors comprising means for sealing hydraulic fluid andmeans for preventing removal of said hydraulic connectors duringoperation of said rotary actuator; said hydraulic connectors comprisinga guide surface for receiving hydraulic lines; said guide surfacecomprising a threaded surface for accepting a threaded screw; and saidhydraulic connectors further comprise a locking screw for threading intosaid threaded surface to prevent removal of said at least one hydraulicconnector during operation of said rotary actuator.
 12. The vehicularstabilizer system according to claim 4 wherein said clamp means isconnected to one of said first stabilizer bar and said second stabilizerbar.
 13. The vehicular stabilizer system according to claim 12wherein:said clamp means comprises a first clamp and a second clamp;said first portion of said first hydraulic line has a length and a firstlongitudinal axis along the length thereof; said first portion of saidsecond hydraulic line has a length and a second longitudinal axis alongthe length thereof; said first clamp has a length and a first transverseaxis along the length thereof; said first clamp is disposed such thatsaid first transverse axis is substantially transverse to said firstlongitudinal axis and said second longitudinal axis; said second clamphas a length and a second transverse axis along the length thereof; saidsecond clamp is disposed such that said second transverse axis issubstantially transverse to said first line; and said second clampcomprises a slot for connecting said clamp to one of said firststabilizer bar and said second stabilizer bar.
 14. The vehicularstabilizer system according to claim 13 wherein:said clamp meanscomprises a band clamp; said band clamp is disposed for fastening one ofsaid first stabilizer bar and said second stabilizer bar to said clampmeans; said band clamp comprises a thin metal strip; and said thin metalstrip is bent around one of said first stabilizer bar and said secondstabilizer bar.
 15. The vehicular stabilizer system according to claim14 wherein:said first hydraulic connector has a length and a thirdlongitudinal axis along the length thereof; said second hydraulicconnector has a length and a fourth longitudinal axis along the lengththereof; said third longitudinal axis is parallel to said fourthlongitudinal axis; said third longitudinal axis is parallel to said axisof rotation; said fourth longitudinal axis is parallel to said axis ofrotation; said first longitudinal axis and said second longitudinal axislie in a first plane; said third longitudinal axis and said fourthlongitudinal axis lie in a second plane; and said first plane issubstantially transverse to said second plane.
 16. The vehicularstabilizer system according to claim 15 wherein said first clamp andsaid second clamp together form one piece.
 17. The vehicular stabilizersystem according to claim 16 including:guide rail means for guiding atleast a portion of said first portion of said first hydraulic line andat least a portion of said first portion of said second hydraulic line;said guide rail means comprising means for guiding the extending and theretracting of said first and second hydraulic lines during actuation ofsaid rotary actuator; means for connecting said first stabilizer bar andsaid second stabilizer to wheel assemblies of a motor vehicle; means forfastening said automobile suspension system to a motor vehicle; ahydraulic system for providing hydraulic fluid to operate said rotaryactuator; said hydraulic system comprising a hydraulic pump for pumpinghydraulic fluid; said hydraulic system further comprising a hydraulicvalve for regulating the flow of hydraulic fluid; means for connectingsaid first stabilizer bar to said first member; means for connectingsaid second stabilizer bar to said second member; bellow sleeves forprotecting said means for connecting said first stabilizer bar and saidfirst member and said means for connecting said second stabilizer barand said second member; said rotary actuator comprising seals to preventleakage of hydraulic fluid during operation of said rotary actuator;hydraulic connectors comprising means for sealing hydraulic fluid andmeans for preventing removal of said hydraulic connectors duringoperation of said rotary actuator; said hydraulic connectors comprisinga guide surface for receiving hydraulic lines; said guide surfacecomprising a threaded surface for accepting a threaded screw; and saidhydraulic connectors further comprise a locking screw for threading intosaid threaded surface to prevent removal of said at least one hydraulicconnector during operation of said rotary actuator.
 18. A vehicularstabilizer system for stabilizing a vehicle during turning, saidvehicular stabilizer system comprising:a first stabilizer bar; a secondstabilizer bar; an actuator; said actuator comprising a first member anda second member; said first stabilizer bar being attached to said firstmember; said second stabilizer bar being attached to said second member;means for connecting hydraulic lines to one of said first member andsaid second member; said means for connecting comprising means forminimizing twisting, during actuation of said actuator, of hydrauliclines along the length of hydraulic lines being connected to one of saidfirst member and said second member; at least one of said first memberand said second member being rotatable with respect to the other; meansfor rotating, with hydraulic fluid pressure, at least one of said firstmember and said second member with respect to the other; at least onesaid first member and said second member being rotatable about an axisof rotation; said means for minimizing twisting of hydraulic linesconnected to one of said first member and said second member comprisingmeans for providing movement of hydraulic lines, connected to one ofsaid first member and said second member, substantially solely in aplane transverse to said axis of rotation during actuation of saidrotary actuator; said means for providing movement of hydraulic lines,connected to one of said first member and said second member, comprisingat least one hydraulic connector for connecting hydraulic lines to oneof said first member and said second member; said at least one hydraulicconnector comprising a first axis; said first axis being disposedthrough said at least one hydraulic connector and substantially parallelto said axis of rotation; said at least one hydraulic connectorcomprising a second axis; said second axis being disposed transverse tosaid first axis of the corresponding at least one hydraulic connector;said at least one hydraulic connector comprising two openings permittingthe flow of hydraulic fluid through said at least one hydraulicconnector in a direction along said first axis and said second axis;said at least one hydraulic connector being connected to one of saidfirst member and said second member to provide hydraulic fluid to saidrotary actuator; said at least one hydraulic connector comprising meansfor connecting hydraulic lines to said at least one hydraulic connectorand maintaining alignment of at least a portion of the hydraulic lineswith said second axis; said at least one hydraulic connector beingnon-rotatably connected to one of said first member and said secondmember; one of said first member and said second member comprising anouter surface disposed furthest away from said axis of rotation; saidaxis of rotation being disposed away from said first axis by a firstdistance; said axis of rotation being disposed away from said outersurface by a second distance; said at least one hydraulic connectorcomprising two hydraulic connectors; said second distance beingsubstantially greater than said first distance and thus minimizes totalmovement of hydraulic lines connected to said hydraulic connectors;means for connecting said first stabilizer bar and said secondstabilizer to wheel assemblies of a motor vehicle; means for fasteningsaid automobile suspension system to a motor vehicle; a hydraulic systemproviding hydraulic fluid to operate said rotary actuator; saidhydraulic system comprising a hydraulic pump for pumping hydraulicfluid; said hydraulic system further comprising a hydraulic valve forregulating the flow of hydraulic fluid; means for connecting said firststabilizer bar to said first member; means for connecting said secondstabilizer bar to said second member; bellow sleeves protecting saidmeans for connecting said first stabilizer bar and said first member andsaid means for connecting said second stabilizer bar and said secondmember; said rotary actuator comprising seals to prevent leakage ofhydraulic fluid during operation of said rotary actuator; said at leastone hydraulic connector comprising means for sealing hydraulic fluid andmeans for preventing removal of said at least one hydraulic connectorduring operation of said rotary actuator; said at least one hydraulicconnector comprising a guide surface for receiving at least onehydraulic line; said guide surface comprising a threaded surface foraccepting a threaded screw; and said at least one hydraulic connectorfurther comprising a locking screw for threading into said treadedsurface to prevent removal of said at least one hydraulic connectorduring operation of said rotary actuator.